156 lines
14 KiB
JavaScript
156 lines
14 KiB
JavaScript
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(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.toMarkdown=f()}})(function(){var define,module,exports;return(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){'use strict'
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var toMarkdown
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var converters
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var mdConverters=require('./lib/md-converters')
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var gfmConverters=require('./lib/gfm-converters')
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var HtmlParser=require('./lib/html-parser')
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var collapse=require('collapse-whitespace')
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var blocks=['address','article','aside','audio','blockquote','body','canvas','center','dd','dir','div','dl','dt','fieldset','figcaption','figure','footer','form','frameset','h1','h2','h3','h4','h5','h6','header','hgroup','hr','html','isindex','li','main','menu','nav','noframes','noscript','ol','output','p','pre','section','table','tbody','td','tfoot','th','thead','tr','ul']
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function isBlock(node){return blocks.indexOf(node.nodeName.toLowerCase())!==-1}
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var voids=['area','base','br','col','command','embed','hr','img','input','keygen','link','meta','param','source','track','wbr']
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function isVoid(node){return voids.indexOf(node.nodeName.toLowerCase())!==-1}
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function htmlToDom(string){var tree=new HtmlParser().parseFromString(string,'text/html')
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collapse(tree.documentElement,isBlock)
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return tree}
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function bfsOrder(node){var inqueue=[node]
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var outqueue=[]
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var elem
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var children
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var i
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while(inqueue.length>0){elem=inqueue.shift()
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outqueue.push(elem)
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children=elem.childNodes
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for(i=0;i<children.length;i++){if(children[i].nodeType===1)inqueue.push(children[i])}}
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outqueue.shift()
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return outqueue}
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function getContent(node){var text=''
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for(var i=0;i<node.childNodes.length;i++){if(node.childNodes[i].nodeType===1){text+=node.childNodes[i]._replacement}else if(node.childNodes[i].nodeType===3){text+=node.childNodes[i].data}else continue}
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return text}
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function outer(node,content){return node.cloneNode(false).outerHTML.replace('><','>'+content+'<')}
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function canConvert(node,filter){if(typeof filter==='string'){return filter===node.nodeName.toLowerCase()}
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if(Array.isArray(filter)){return filter.indexOf(node.nodeName.toLowerCase())!==-1}else if(typeof filter==='function'){return filter.call(toMarkdown,node)}else{throw new TypeError('`filter` needs to be a string, array, or function')}}
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function isFlankedByWhitespace(side,node){var sibling
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var regExp
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var isFlanked
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if(side==='left'){sibling=node.previousSibling
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regExp=/ $/}else{sibling=node.nextSibling
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regExp=/^ /}
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if(sibling){if(sibling.nodeType===3){isFlanked=regExp.test(sibling.nodeValue)}else if(sibling.nodeType===1&&!isBlock(sibling)){isFlanked=regExp.test(sibling.textContent)}}
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return isFlanked}
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function flankingWhitespace(node,content){var leading=''
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var trailing=''
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if(!isBlock(node)){var hasLeading=/^[ \r\n\t]/.test(content)
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var hasTrailing=/[ \r\n\t]$/.test(content)
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if(hasLeading&&!isFlankedByWhitespace('left',node)){leading=' '}
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if(hasTrailing&&!isFlankedByWhitespace('right',node)){trailing=' '}}
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return{leading:leading,trailing:trailing}}
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function process(node){var replacement
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var content=getContent(node)
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if(!isVoid(node)&&!/A|TH|TD/.test(node.nodeName)&&/^\s*$/i.test(content)){node._replacement=''
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return}
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for(var i=0;i<converters.length;i++){var converter=converters[i]
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if(canConvert(node,converter.filter)){if(typeof converter.replacement!=='function'){throw new TypeError('`replacement` needs to be a function that returns a string')}
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var whitespace=flankingWhitespace(node,content)
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if(whitespace.leading||whitespace.trailing){content=content.trim()}
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replacement=whitespace.leading+
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converter.replacement.call(toMarkdown,content,node)+
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whitespace.trailing
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break}}
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node._replacement=replacement}
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toMarkdown=function(input,options){options=options||{}
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if(typeof input!=='string'){throw new TypeError(input+' is not a string')}
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if(input===''){return''}
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input=input.replace(/(\d+)\. /g,'$1\\. ')
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var clone=htmlToDom(input).body
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var nodes=bfsOrder(clone)
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var output
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converters=mdConverters.slice(0)
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if(options.gfm){converters=gfmConverters.concat(converters)}
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if(options.converters){converters=options.converters.concat(converters)}
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for(var i=nodes.length-1;i>=0;i--){process(nodes[i])}
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output=getContent(clone)
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return output.replace(/^[\t\r\n]+|[\t\r\n\s]+$/g,'').replace(/\n\s+\n/g,'\n\n').replace(/\n{3,}/g,'\n\n')}
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toMarkdown.isBlock=isBlock
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toMarkdown.isVoid=isVoid
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toMarkdown.outer=outer
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module.exports=toMarkdown},{"./lib/gfm-converters":2,"./lib/html-parser":3,"./lib/md-converters":4,"collapse-whitespace":7}],2:[function(require,module,exports){'use strict'
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function cell(content,node){var index=Array.prototype.indexOf.call(node.parentNode.childNodes,node)
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var prefix=' '
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if(index===0)prefix='| '
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return prefix+content+' |'}
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var highlightRegEx=/highlight highlight-(\S+)/module.exports=[{filter:'br',replacement:function(){return'\n'}},{filter:['del','s','strike'],replacement:function(content){return'~~'+content+'~~'}},{filter:function(node){return node.type==='checkbox'&&node.parentNode.nodeName==='LI'},replacement:function(content,node){return(node.checked?'[x]':'[ ]')+' '}},{filter:['th','td'],replacement:function(content,node){return cell(content,node)}},{filter:'tr',replacement:function(content,node){var borderCells=''
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var alignMap={left:':--',right:'--:',center:':-:'}
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if(node.parentNode.nodeName==='THEAD'){for(var i=0;i<node.childNodes.length;i++){var align=node.childNodes[i].attributes.align
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var border='---'
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if(align)border=alignMap[align.value]||border
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borderCells+=cell(border,node.childNodes[i])}}
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return'\n'+content+(borderCells?'\n'+borderCells:'')}},{filter:'table',replacement:function(content){return'\n\n'+content+'\n\n'}},{filter:['thead','tbody','tfoot'],replacement:function(content){return content}},{filter:function(node){return node.nodeName==='PRE'&&node.firstChild&&node.firstChild.nodeName==='CODE'},replacement:function(content,node){return'\n\n```\n'+node.firstChild.textContent+'\n```\n\n'}},{filter:function(node){return node.nodeName==='PRE'&&node.parentNode.nodeName==='DIV'&&highlightRegEx.test(node.parentNode.className)},replacement:function(content,node){var language=node.parentNode.className.match(highlightRegEx)[1]
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return'\n\n```'+language+'\n'+node.textContent+'\n```\n\n'}},{filter:function(node){return node.nodeName==='DIV'&&highlightRegEx.test(node.className)},replacement:function(content){return'\n\n'+content+'\n\n'}}]},{}],3:[function(require,module,exports){var _window=(typeof window!=='undefined'?window:this)
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function canParseHtmlNatively(){var Parser=_window.DOMParser
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var canParse=false
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try{if(new Parser().parseFromString('','text/html')){canParse=true}}catch(e){}
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return canParse}
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function createHtmlParser(){var Parser=function(){}
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if(typeof document==='undefined'){var jsdom=require('jsdom')
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Parser.prototype.parseFromString=function(string){return jsdom.jsdom(string,{features:{FetchExternalResources:[],ProcessExternalResources:false}})}}else{if(!shouldUseActiveX()){Parser.prototype.parseFromString=function(string){var doc=document.implementation.createHTMLDocument('')
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doc.open()
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doc.write(string)
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doc.close()
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return doc}}else{Parser.prototype.parseFromString=function(string){var doc=new window.ActiveXObject('htmlfile')
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doc.designMode='on'
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doc.open()
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doc.write(string)
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doc.close()
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return doc}}}
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return Parser}
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function shouldUseActiveX(){var useActiveX=false
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try{document.implementation.createHTMLDocument('').open()}catch(e){if(window.ActiveXObject)useActiveX=true}
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return useActiveX}
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module.exports=canParseHtmlNatively()?_window.DOMParser:createHtmlParser()},{"jsdom":6}],4:[function(require,module,exports){'use strict'
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module.exports=[{filter:'p',replacement:function(content){return'\n\n'+content+'\n\n'}},{filter:'br',replacement:function(){return' \n'}},{filter:['h1','h2','h3','h4','h5','h6'],replacement:function(content,node){var hLevel=node.nodeName.charAt(1)
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var hPrefix=''
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for(var i=0;i<hLevel;i++){hPrefix+='#'}
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return'\n\n'+hPrefix+' '+content+'\n\n'}},{filter:'hr',replacement:function(){return'\n\n* * *\n\n'}},{filter:['em','i'],replacement:function(content){return'_'+content+'_'}},{filter:['strong','b'],replacement:function(content){return'**'+content+'**'}},{filter:['u'],replacement:function(content){return'_'+content+'_'}},{filter:['del','s','strike'],replacement:function(content){return'~~'+content+'~~'}},{filter:'div',replacement:function(content){return content+'\n\n'}},{filter:function(node){var hasSiblings=node.previousSibling||node.nextSibling
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var isCodeBlock=node.parentNode.nodeName==='PRE'&&!hasSiblings
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return node.nodeName==='CODE'&&!isCodeBlock},replacement:function(content){return'`'+content+'`'}},{filter:function(node){return node.nodeName==='A'&&node.getAttribute('href')},replacement:function(content,node){var titlePart=node.title?' "'+node.title+'"':''
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return'['+content+']('+node.getAttribute('href')+titlePart+')'}},{filter:'video',replacement:function(content,node){var alt=node.getAttribute('alt')||''
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var src
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for(var i=0;i<node.childNodes.length;i++){if(node.childNodes[i].localName==='source'){src=node.childNodes[i].getAttribute('src')
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break}}
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var title=node.title||''
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var titlePart=title?' "'+title+'"':''
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return src?'![video:'+alt+']'+'('+src+titlePart+')':''}},{filter:'audio',replacement:function(content,node){var alt=node.getAttribute('alt')||''
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var src=node.getAttribute('src')||''
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if(!src){for(var i=0;i<node.childNodes.length;i++){if(node.childNodes[i].localName==='source'){src=node.childNodes[i].getAttribute('src')
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break}}}
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var title=node.title||''
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var titlePart=title?' "'+title+'"':''
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return src?'![audio:'+alt+']'+'('+src+titlePart+')':''}},{filter:'img',replacement:function(content,node){var alt=node.alt||''
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var src=node.getAttribute('src')||''
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var title=node.title||''
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var titlePart=title?' "'+title+'"':''
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return src?'!['+alt+']'+'('+src+titlePart+')':''}},{filter:function(node){return node.nodeName==='PRE'&&node.firstChild.nodeName==='CODE'},replacement:function(content,node){return'\n\n '+node.firstChild.textContent.replace(/\n/g,'\n ')+'\n\n'}},{filter:'blockquote',replacement:function(content){content=content.trim()
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content=content.replace(/\n{3,}/g,'\n\n')
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content=content.replace(/^/gm,'> ')
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return'\n\n'+content+'\n\n'}},{filter:'li',replacement:function(content,node){content=content.replace(/^\s+/,'').replace(/\n/gm,'\n ')
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var prefix='* '
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var parent=node.parentNode
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var index=Array.prototype.indexOf.call(parent.children,node)+1
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prefix=/ol/i.test(parent.nodeName)?index+'. ':'* '
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return prefix+content}},{filter:['ul','ol'],replacement:function(content,node){var strings=[]
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for(var i=0;i<node.childNodes.length;i++){strings.push(node.childNodes[i]._replacement)}
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if(/li/i.test(node.parentNode.nodeName)){return'\n'+strings.join('\n')}
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return'\n\n'+strings.join('\n')+'\n\n'}},{filter:function(node){return this.isBlock(node)},replacement:function(content,node){return'\n\n'+this.outer(node,content)+'\n\n'}},{filter:function(){return true},replacement:function(content,node){return this.outer(node,content)}}]},{}],5:[function(require,module,exports){module.exports=["address","article","aside","audio","blockquote","canvas","dd","div","dl","fieldset","figcaption","figure","footer","form","h1","h2","h3","h4","h5","h6","header","hgroup","hr","main","nav","noscript","ol","output","p","pre","section","table","tfoot","ul","video"];},{}],6:[function(require,module,exports){},{}],7:[function(require,module,exports){'use strict';var voidElements=require('void-elements');Object.keys(voidElements).forEach(function(name){voidElements[name.toUpperCase()]=1;});var blockElements={};require('block-elements').forEach(function(name){blockElements[name.toUpperCase()]=1;});function isBlockElem(node){return!!(node&&blockElements[node.nodeName]);}
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function isVoid(node){return!!(node&&voidElements[node.nodeName]);}
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function collapseWhitespace(elem,isBlock){if(!elem.firstChild||elem.nodeName==='PRE')return;if(typeof isBlock!=='function'){isBlock=isBlockElem;}
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var prevText=null;var prevVoid=false;var prev=null;var node=next(prev,elem);while(node!==elem){if(node.nodeType===3){var text=node.data.replace(/[ \r\n\t]+/g,' ');if((!prevText||/ $/.test(prevText.data))&&!prevVoid&&text[0]===' '){text=text.substr(1);}
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if(!text){node=remove(node);continue;}
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node.data=text;prevText=node;}else if(node.nodeType===1){if(isBlock(node)||node.nodeName==='BR'){if(prevText){prevText.data=prevText.data.replace(/ $/,'');}
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prevText=null;prevVoid=false;}else if(isVoid(node)){prevText=null;prevVoid=true;}}else{node=remove(node);continue;}
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var nextNode=next(prev,node);prev=node;node=nextNode;}
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if(prevText){prevText.data=prevText.data.replace(/ $/,'');if(!prevText.data){remove(prevText);}}}
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function remove(node){var next=node.nextSibling||node.parentNode;node.parentNode.removeChild(node);return next;}
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function next(prev,current){if(prev&&prev.parentNode===current||current.nodeName==='PRE'){return current.nextSibling||current.parentNode;}
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return current.firstChild||current.nextSibling||current.parentNode;}
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module.exports=collapseWhitespace;},{"block-elements":5,"void-elements":8}],8:[function(require,module,exports){module.exports={"area":true,"base":true,"br":true,"col":true,"embed":true,"hr":true,"img":true,"input":true,"keygen":true,"link":true,"menuitem":true,"meta":true,"param":true,"source":true,"track":true,"wbr":true};},{}]},{},[1])(1)}); |